Machine for beading radiator fins



April 5,1927.

' B. H. HAWKINS ET AL MACHINE FOR BEADING RADIATOR FINS 5 sne'ets-"she'et 1 I Filed Dec. 16 1924 il 5 1927. 1,623,594 p H B. H. HAWKINS ET AL I momma FOR BEADING RADIATOR'FINS Filed Dec.l6, l924 ssheets-sheet z l Q N Fl IHHHI A r l 5, 1927.

B. H. HAWKINS ET AL MACHINE FOR BEADING-RADIATOR PINS Filed Dec. l6.' 1924 5 Sheets-Sheet 5 72' Z??? (or: fertzriTa "ill :15,

B. H. HAWKINS ET AL MACHINE FOR BEADING RADIATOR FINS April 5 1927. 1,623,594

Filed Dec.16, 1924 5 She ets-Sheet 4 v 162 Apn] 1927' a. H. HAWKINS ET AL 3 594 MACHINE FOR BEADING RADIATOR FINS Filed Dec. 16. 1924 5 Sheets-Sheet 5 Fig (.11 F5 12 15.

J2 2/672 r0739: Fer f H 770 10721225,

t k on lines of Fig. 15

fj P'atented Apr. 5, 1927.

- 'Bnn'r n. nawxms, or ROYAL oax, AND n'nwnnn our, nssmnons ro' HOODED RADIATOR a oonronarron or mum 00., OF DETROIT, IIGEIGAJI, A

ncnmn ron BEADING RADIATOR rms.

Application filed December 16, 1924. Serial 10. 756,181.

This invention relates to a machine for bending over or beading the outer edges of sheet-metal fin strips orplates for automobile and like radiators.

The main object of our invention is to provide a machine which will cut and bead or bend over the curved or rounded front edges of fin strips-used in radiators having rounded or curved fronts, as employed on v 10 the Studebaker cars.

Agfurther object of our invention is to make the machine simple in its construction 1 and automatic in its operation so that it will I perform its functions as the stri s to be op- 'erated upon are .fed into the mac me.

The invention consists further inthe matters hereinafter described and claimed.

In the accompanying drawings Fig. 1 is a top plan ,view of a machine constructed in accordance with our inven- ,tignn Y I Figs. 2 and 2 are vertical sectional views 2-2 and 2'-2., respectively,

s a side view of the machine; Fig. 4 is a front view of one of the holddowns; 4 Fig. 4 is an end view thereof; f Fig. 5 is a perspective view of one of'th sheet-metal fin strips headed by our machine;

Fig. 6 is a top plan viewof thebeading roller assembly, with the hold-down rollers omitted for the sake of illustration; Fig. 7 is a front view of said assembly; Fig. 8 is a vertical sectional view on line 8-8 of Fig. 7;

Fig. 9 is avertical section on line 9-9 of Fig. 6; l

Fig. 10 is a vertical section on line 1010 P of Fig. 1; Fig. 10" is a front view of a detail to be hereinafter described; and Figs. 11 to 21 show the manner in which the bead is rolled on the edge of the fin plate.

The machine of our invention has a horizontal table 1 on' a supporting base 2 and rotated by meshing worm and worm gear 3, 4, shown in dotted lines in Fi 1. The worm 3 is carried by a horizontal s aft 5 under the table 1 and journaled on the base 2, as shown in Fig. 1. The shaft 5 carries driving and the base 2 and are there are five pairs of closel loose pulleys 6, 6 for rotating the table 1 by power.

- The table 1 downs'7, 7, arranged about its'outer edge and circumferentlally shown. Each hold-down has a flat metal .back 8 and an outer marginal. flange 9, curved to conform to the curvature of the outer edge ofthe table 1 and to lie along the same when the hold-down is pressed down on the table, as 2. The end portions of the flangei) are connected by a rod 10 with upright bracket spaced apart, as

shown in Figs. 1 'and 3. menu, or mrrnorr, mc mcarries a pluralityv of bold arms 11; 11 secured to the table I. Said I rod 10 carries coiled springs 12,- 12 at its ends with the springs hooked to the holddown 7 and the bracket arms 11, respectively, for raising 'lt the hold-down and normally holding it in the uplright inclined position shown in Fig. 4.

4') to receive the back 8 sides of. the machine as shown in Figs. 1

' he upper ends-of the bracket arms 11- are notched as at 11" (Fig.-

and form stops to. prevent the hold-down from going. back be," yond the upright position shown.

and 3. These assemblies are supported by alike in construction. 9

Each' assembly A has a plurality of edgebending or forming rolls arranged in verti cal pairs, as shown in Fig.7. As'illustrated '1 an shown in Fig. 1. The upper rolls are'indicated by 13 to 17 inclusive, while-the lower inclusive. The upper roll as shownin Figs. 6 to 8. Fixed totheouter end of this shaft is a sprocket wheel 20 con rolls, all arran edvv I ad acent the outer edge of. the t 'le; following the curvature thereofg 'as pair or set is fixed to the nected' by a chain 21 with a sprocket wheel on the main shaft 5 at one side of the mar" the op site. a side of themachine, as shown in Fig-1. 1. 9" As there illustrated, this shaft geared to); the. adjacent end of the main shaft 5 so that the rolls of the two-assemblies A; A will rochine and with a shaft 39 at tate in proper directions.

shown in .Fig. 8, shaft 18 has a gear P1111011 15" in mesh with a pinion 15 on the fin strip is passed between the rolls.

F i 5 shows the radiator fin plate or strip 22 after having a head 23 formed onits rounded or curved front edge by our improved machine. This plate before being operated on by our machine is blanked out of flat stock (brass) with a straight front edge, as shown at a in Fig. 1. The plate 22 is also provided with the perforations or holes 24 for the water tubes (not shown), and these perforations are distributed over the entire surface of the plate in accordance with the tube arrangement, only a few of the holes being shown in Fig. 5. i

The table 1 is rotated in the direction of the arrow in Fig. 1, and a plate22 to be operated'on is placed fiatwise on the table 1 in front of an upstanding hold-down 7 in advance of one of the boxes 19, with the two guide pins'25, 25 in front of said hold-down extending upward through two of the holes 24, 24 in the plate to hold it in place with its front portion projecting out beyond the table, as shown. The plate is trimmed off to the curvature of the table by the rotary cutters 26, 26 as the plate is carried by the table between said cutters. (See Figs. 1 and 10.)

In advance of these cutters is a fixed bar 27 having an intermediate portion extending diagonally over the outer margin of the table 1, as shown in Figs. 1 and 3, to be in the path of the hold-downs 7 as they are carried around by the table 1. This portion of the bar 27 is inclined upward so that the hold-downs 7 as they are moved under such portion of the bar by the table are turned down against the table by the bar to clamp the interposed plate 22 thereon. The lower end portion of the bar 27 at the cutters is straight and is spaced above the table just sufiicient for the hold-downs 7 to pass under the same, as shown in Fig. 10. The opposite or upper end portion of the bar. is also straight but is spaced above the table higher than the'hold-downs 7 so that the latter while standing upright (Fig. 4) may pass under the upper end of the bar as they are carried by the table to contact with the intermediate inclined portion of said bar for thepurpose mentioned. To this upper part of the bar is secured a shield 27 under which the hold downs pass on approaghing the inclined part of the bar. The shield pxtends down in front of the tablland prev ents an operator from reaching in under a hold- 'ble of a double output.

down as it passes under the bar 27. At the cutters is a roller 28, which bears downward on the backs 8 of the hold-downs 7 to keep them clamped against the plates while being trimmed by the cutters. This roller is carried by a spring pressed bar 28.

From the bar 27, the hold-down 7 passes undera roller 29 carried by the box 19. Before completely leaving this roller, the hold down 7 passes under another roller 29 to still further hold the hold-down against the plate. By the bar 27 and rollers 28, 29 and 29, the plate 22 is clamped against the table 1 during the entire operation of trimming by the cutters 26, 26 and the ed e beading by the rolls heretofore described. \Vhcn the hold-down 7 leaves the last roller, the springs of the hold-down raise it to release the plate, and a stripper 30 strips the finished late from the table and it drops into a disc large chute 31, as-shown in Fig. 1. The stripper 30 is forked to pass the pins 25, 25 and is inclined upward, as shown in Fig. 2. As there shown, the chute 31 supports the stripper.

The rolls heretofore mentioned operate on the curved front edge of the plate or sheet 22 as follows: The rolls 13, 13 (Fig. 11) are formed to first bend up the fiat edge of the sheet at the inclination shown at b in Fig. 14. The rolls 14, 14 (Fig. 13) complete the turning of this flange to right-angles to the sheet, as shown at c in Fig. 15. The next rolls 15, 15 curl over the upper edge of this right-angle flange, as shown at d in Fig. 19. T e rolls 16, 16 further turn over this flange until it meets the body of the sheet, as at e in Fig. 20. The rolls 17, 17 a complete the curling of the edge and make the head as shown at f in Fig. 21.

With the edge forming mechanism duplicated on opposite sides of the machine, as shown in Figs. 1 and 3, the machine is capa- By rounding the outer edges of the hold-downs, the bars 27,

27 may operate on them from either end,. thus enabling one set of hold-downs to beused with a plurality of stations. With the hold-downs standing at an inclination, they will readily turn down on passing under the inclined portions of the bars 27. The table and rounded edge of the plates 22 must have the same curvature. As shown in Fi 10, the roller 29 is carried by a bar 29 fitting loose on a bolt 29. Another bolt 29 passes through the bar and carries a coiled spring 29, which holds the roller down against the hold-down. The roller 29 has the same mounting.-

As shown in Fig. 10, the upper cutter 26 is fixed to a shaft 32 journaled in a box on the base 2 and flexibly connected with a driving shaft 33 carrying a pulley 34 (Fig. 1). The lower cutter 26 is on a shaft 35 having a spur gear pinion 36 in mesh with a like pinion 37 on shaft 32. The main shaft at one side of the table has a pulley 38 for a belt from the pulley 34. On the opposite side of the table, the main shaft 5 drives a shaft 39 b intermeshing gears, as shown in Fig. 1. haft 39 has a pulle connected by belt 41 with pulle 34 0 cutters 26, 26 at such side of t e table, as shown in Fig. 1. The lower end bar 27 1S fixed in the position shown by havin its end bent outward and secured to the si e of the bearing box for the cutters, as shown at left in Fig. 2.

The details of construction and arrangement of parts shown and described may be variously changed and modified without de parting from the spirit and scope of our mvention.

We claim as our invention: 1.'In a machine of the character described, the combination with a circular table, of means .for holding a sheet-metal radiator fin strip on the table with the curved or rounded front edge of the strip along the outer curved edge of the table,

. and a set of rolls along said table edge for table, of means for holdin beading the curved edge of the strip while passing between the rolls.

2. In a machine of the character de-. scribed, the combination with a circular a sheet-metal v radiator fin strip on the tab e, cutter means for trimming the strip to give it a rounded or curved front edge conforming to the curvature of the curved outer edge of the table, and a set of rolls along said table edge for v i I heading the curved edge of the strip while passing between the rolls.

3. In a machine of the character described, thecombination with a table, of means for holding a sheet-metal radiator fin stri on the table with the curved or rounded front edge of the strip along the outer edge of the table, and a set of rolls along said table edge for beadi'n the curved I edge of the strip while assing etween the rolls, the table edge an the setting of the rolls along the same conforming to the curvature of the curved ed e of the strip. 60

4. In a machine 0 the character described, the combination with a rotary table of aset of rolls along the table edge, an means for holding a sheet-metal radiator fin strip on the table while the rolls head the curved or rounded front edge of the strip, said holding means acting automatically to clamp the strip on the table in ad- Vance of the rolls and releasing the strip for removal from the table after leaving the rolls.

- 5. In a machine of the character described, the combination with a rotary table, of a'set of rolls along the table edge, means for holding a sheet-metal radiator fin strip on the table while the rolls head the curved the the table edge, a

means including rollers and a'bar above the table for swinging the member down and holding aradiator fin strip clamped on the table while the rolls bead the curved front edge of said strip, said-bar being inclined upwardly and extendin dia onall over the table in advance of t e rol sai member automaticall rising upward to release the strip after eing carried by the table from engagement with the last of the rollers.

7. In amachine of the character described, the combination with a rotary table, of two sets of rolls positioned on op site sides of the table ed e, a plurality of liinged mem bers carried y the table and having spring means to raise the same, and means at both sets of rolls for swinging the members down and holding sheet-metal radiator fin strips clamped on the table while the rolls bead the curved front edges of the strips, said means including upwardly inclined bars, one

' at each set of rolls and arranged in advance thereof for, acting on the members from either end.

. 8. In a'machine of the character described, the combination with a rotary table, of a set of rolls arranged along the table edge, a hinged member carried. by the table and hav: 7

ing a back and a curved marginal flange, spring means for raising the member, and an inclined bar and rollers for swingingthe member down and holding a sheet-metal radiator fin strip clamped on the table by said flange while the rolls head the curved or rounded front edge of the strisaidbar and rollers acting on the ba member. i

of said.

9. In a machine of the character described, the combination with a-rotarytable, of a set of rolls alon upright metal ra ins on t e table to en a sheet iator fin strip and hofl edge, .means for swingin the member down and holding the fin strip'clamlped on the i M fwhile the rolls head the fmntfe'dgeofjthe stri .spr'tnlig table while beingv trimmedian means for raisingthei strip after passing 398? stee e -5 the table edge, a set of no I it in place on the table, amember hinged to the table behind said pins, cutters for trimming the sheet to give ita. curved or rounded'front for stri ing the strip from thepins when I released. y said member.

10. In a machine of the character described, the combination with a rotary table, of a set of rolls along the table edge, a member hin ed to the table and having spring means or raising the same, an inclined bar having an upper end and rollers for swinging the member down and holdlng a sheetmetal radiator fin strip clamped against the 1 table while the rolls head the curved or rounded front edge of the strip, and means for limiting the upward swing of the member when raised to hold it in an inclined p0- sition for passing under the upper end of said bar when carried intoengagement thererounde v outer curved edge of the table, and a set of rolls along said table edge for heading the the rate of speed at which the edge of said strip is passed between them.

12. In a machine of the character de scribed, the combination with a rotary table, of a set of rolls along the table edge, a member hinged to the table and having spring means for raising the same, a bar having an upwardly inclined portion and rollers associated therewith for swinging the member down and holding a sheet metal radiator fin strip clamped against the table while the rolls bead the curved or rounded front edge of the strip, and a shield secured to the upper end of said bar for the member to pass under on approaching the inclined portion of said bar.

In testimony that we claim the foregoing as our invention, we afiix our signatures, this 28th day of October, A. D. 1924.

. BERT H. HAWKINS. EDWARD R. HANSEN. 

